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Reproduce the Axelrod iterated prisoners dilemma tournament

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Axelrod

A library with the following principles and goals:

  1. Enabling the reproduction of previous Iterated Prisoner’s Dilemma research as easily as possible.

  2. Creating the de-facto tool for future Iterated Prisoner’s Dilemma research.

  3. Providing as simple a means as possible for anyone to define and contribute new and original Iterated Prisoner’s Dilemma strategies.

  4. Emphasizing readability along with an open and welcoming community that is accommodating for developers and researchers of a variety of skill levels.

Currently the library contains well over 100 strategies and can perform a variety of tournament types (RoundRobin, Noisy, Spatially-distributed, and probabilistically ending) and population dynamics while taking advantage of multi-core processors.

Please contribute via pull request (or just get in touch with us).

For an overview of how to use and contribute to this repository, see the documentation: http://axelrod.readthedocs.org/

If you do use this library for your personal research we would love to hear about it: please do add a link at the bottom of this README file (PR’s welcome or again, just let us know) :) If there is something that is missing in this library and that you would like implemented so as to be able to carry out a project please open an issue and let us know!

Installation

The simplest way to install is:

$ pip install axelrod

Otherwise:

$ git clone https://github.com/Axelrod-Python/Axelrod.git
$ cd Axelrod
$ python setup.py install

Note that on Ubuntu some users have had problems installing matplotlib. This seems to help with that:

sudo apt-get install libfreetype6-dev
sudo apt-get install libpng12-0-dev

Usage

The full documentation can be found here: axelrod.readthedocs.org/.

The documentation includes details of how to setup a tournament but here is a brief example showing how to get a simple tournament:

>>> import axelrod as axl
>>> axl.seed(0)  # Set a seed
>>> players = [s() for s in axl.demo_strategies]  # Create players
>>> tournament = axl.Tournament(players)  # Create a tournament
>>> results = tournament.play()  # Play the tournament
>>> results.ranked_names
['Defector', 'Grudger', 'Tit For Tat', 'Cooperator', 'Random: 0.5']

There is also a notebooks repository which shows further examples of using the library.

Results

A tournament with the full set of strategies from the library can be found at https://github.com/Axelrod-Python/tournament. These results can be easily viewed at http://axelrod-tournament.readthedocs.org.

Contributing

All contributions are welcome!

You can find helpful instructions about contributing in the documentation: http://axelrod.readthedocs.org/en/latest/tutorials/contributing/index.html

Example notebooks

https://github.com/Axelrod-Python/Axelrod-notebooks contains a set of example Jupyter notebooks.

Projects that use this library

If you happen to use this library for anything from a blog post to a research paper please list it here:

Contributors

The library has had many awesome contributions from many great contributors. The Core developers of the project are:

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